Questions: Classify each chemical reaction: Reaction Type 2 CrI3(aq) + 3 Pb(NO3)2(aq) → 2 Cr(NO3)3(aq) + 3 PbI2(s) choose one H2SO3(aq) → H2O(l) + SO2(g) choose one Ca(s) + F2(g) → CaF2(s) choose one 2 Na(s) + 2 HCl(aq) → 2 NaCl(aq) + H2(g) choose one choose one combination decomposition single displacement double substitution none of the above

Classify each chemical reaction: Reaction Type 2 CrI3(aq) + 3 Pb(NO3)2(aq) → 2 Cr(NO3)3(aq) + 3 PbI2(s) choose one H2SO3(aq) → H2O(l) + SO2(g) choose one Ca(s) + F2(g) → CaF2(s) choose one 2 Na(s) + 2 HCl(aq) → 2 NaCl(aq) + H2(g) choose one choose one combination decomposition single displacement double substitution none of the above
Transcript text: Classify each chemical reaction: \begin{tabular}{|c|l|} \hline Reaction & Type \\ \hline $2 \mathrm{CrI}_{3}(a q)+3 \mathrm{~Pb}\left(\mathrm{NO}_{3}\right)_{2}(a q) \rightarrow 2 \mathrm{Cr}\left(\mathrm{NO}_{3}\right)_{3}(a q)+3 \mathrm{PbI}_{2}(s)$ & choose one \\ \hline $\mathrm{H}_{2} \mathrm{SO}_{3}(a q) \rightarrow \mathrm{H}_{2} \mathrm{O}(l)+\mathrm{SO}_{2}(g)$ & choose one \\ \hline $\mathrm{Ca}(s)+\mathrm{F}_{2}(g) \rightarrow \mathrm{CaF}_{2}(s)$ & choose one \\ \hline $2 \mathrm{Na}(s)+2 \mathrm{HCl}(a q) \rightarrow 2 \mathrm{NaCl}(a q)+\mathrm{H}_{2}(g)$ & choose one \\ \hline \end{tabular} choose one combination decomposition single displacement double substitution none of the above
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Solution

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Solution Steps

Step 1: Classify the first reaction

The first reaction is: \[ 2 \mathrm{CrI}_{3}(aq) + 3 \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}(aq) \rightarrow 2 \mathrm{Cr}\left(\mathrm{NO}_{3}\right)_{3}(aq) + 3 \mathrm{PbI}_{2}(s) \]

This reaction involves the exchange of ions between two compounds, resulting in the formation of two new compounds. This is characteristic of a double substitution reaction.

Step 2: Classify the second reaction

The second reaction is: \[ \mathrm{H}_{2} \mathrm{SO}_{3}(aq) \rightarrow \mathrm{H}_{2} \mathrm{O}(l) + \mathrm{SO}_{2}(g) \]

This reaction involves the breakdown of a single compound into two or more simpler substances. This is characteristic of a decomposition reaction.

Step 3: Classify the third reaction

The third reaction is: \[ \mathrm{Ca}(s) + \mathrm{F}_{2}(g) \rightarrow \mathrm{CaF}_{2}(s) \]

This reaction involves the combination of two elements to form a single compound. This is characteristic of a combination reaction.

Final Answer

\[ \begin{array}{|c|l|} \hline \text{Reaction} & \text{Type} \\ \hline 2 \mathrm{CrI}_{3}(aq) + 3 \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}(aq) \rightarrow 2 \mathrm{Cr}\left(\mathrm{NO}_{3}\right)_{3}(aq) + 3 \mathrm{PbI}_{2}(s) & \text{double substitution} \\ \hline \mathrm{H}_{2} \mathrm{SO}_{3}(aq) \rightarrow \mathrm{H}_{2} \mathrm{O}(l) + \mathrm{SO}_{2}(g) & \text{decomposition} \\ \hline \mathrm{Ca}(s) + \mathrm{F}_{2}(g) \rightarrow \mathrm{CaF}_{2}(s) & \text{combination} \\ \hline \end{array} \]

\(\boxed{\text{double substitution, decomposition, combination}}\)

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